But I'm concerned about performance. The delkin_cb.c file states:..
* This is slightly peculiar, in that it is a PCI driver,
* but is NOT an IDE PCI driver -- the IDE layer does not directly
* support hot insertion/removal of PCI interfaces, so this driver
* is unable to use the IDE PCI interfaces. Instead, it uses the
* same interfaces as the ide-cs (PCMCIA) driver uses.
* On the plus side, the driver is also smaller/simpler this way.
My attempts to use hdparm to turn on DMA for my device have failed. I
assume this means DMA is not currently supported. In my tests, read
support seems fast enough, but writing maxes out around 2MB/s. And if
there is a lot of reading and writing going on (ie, trying to compile
the kernel), performance is pretty abysmal. What would it take to get
proper DMA support? Is it an architecture problem, in that this
doesn't use the normal IDE PCI driver? Is it a lack of documentation
on card specs? What can I do to help?